Elantec EL5193CS-T13 Single 300mhz current feedback amplifier Datasheet

EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Features
General Description
• 300MHz -3dB bandwidth
• 4mA supply current
• Single and dual supply operation,
from 5V to 10V supply span
• Available in 5-pin SOT23 package
• Dual (EL5293C) and triple
(EL5393C) available
• High speed, 1GHz product
available (EL5193C)
• High speed, 6mA, 600MHz
product available (EL5192C,
EL5292C, and EL5392C
The EL5193C is a current feedback amplifier with a bandwidth of
300MHz. This makes these amplifiers ideal for today’s high speed
video and monitor applications.
Applications
Pin Configurations
•
•
•
•
•
•
•
•
With a supply current of just 4mA and the ability to run from a single
supply voltage from 5V to 10V, these amplifiers are also ideal for
hand held, portable or battery-powered equipment.
For applications where board space is critical, the EL5193C is offered
in the 5-pin SOT23 package, as well as an industry standard 8-pin SO.
The EL5193C operates over the industrial temperature range of -40°C
to +85°C.
Battery Powered Equipment
Hand Held, Portable Devices
Video Amplifiers
Cable Drivers
RGB Amplifiers
Test Equipment
Instrumentation
Current to Voltage Converters
SO8
5-Pin SOT23
8 NC*
NC 1
OUT 1
IN- 2
Package
VS- 2
+
Ordering Information
Part No
5 VS+
IN+ 3
Tape &
Reel
Outline #
EL5193CW-T7
5-Pin SOT23
7”
MDP0038
EL5193CW-T13
5-Pin SOT23
13”
MDP0038
EL5193CS
8-Pin SO
-
MDP0027
EL5193CS-T7
8-Pin SO
7”
MDP0027
EL5193CS-T13
8-Pin SO
13”
MDP0027
IN+ 3
+
7 VS+
6 OUT
4 IN5 NC
VS- 4
EL5193CW
EL5193CS
* This pin must be left disconnected
April 12, 2001
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
© 2001 Elantec Semiconductor, Inc.
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Absolute Maximum Ratings (T
A
= 25°C)
Values beyond absolute maximum ratings can cause the device to be prematurely damaged. Absolute maximum ratings are stress ratings only and
functional device operation is not implied.
11V
Supply Voltage between VS+ and VSMaximum Continuous Output Current
50mA
Operating Junction Temperature
Power Dissipation
Pin Voltages
Storage Temperature
Operating Temperature
125°C
See Curves
VS- - 0.5V to VS+ +0.5V
-65°C to +150°C
-40°C to +85°C
Important Note:
All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the
specified temperature and are pulsed tests, therefore: TJ = TC = TA.
Electrical Characteristics
VS+ = +5V, VS- = -5V, RF = 750Ω for AV = 1, RF = 400Ω for AV = 2, RL = 150Ω, TA = 25°C unless otherwise specified.
Parameter
Description
Conditions
Min
Typ
Max
Unit
AC Performance
BW
-3dB Bandwidth
AV = +1
300
MHz
AV = +2
200
MHz
20
MHz
2600
V/µs
BW1
0.1dB Bandwidth
SR
Slew Rate
VO = -2.5V to +2.5V, AV = +2
ts
0.1% Settling Time
VOUT = -2.5V to +2.5V, AV = -1
en
2400
12
ns
Input Voltage Noise
4.4
nV/√Hz
in-
IN- input current noise
17
pA/√Hz
in+
IN+ input current noise
50
pA/√Hz
dG
Differential Gain Error
AV = +2
0.03
%
dP
Differential Phase Error
AV = +2
0.04
°
[1]
[1]
DC Performance
VOS
Offset Voltage
TCVOS
Input Offset Voltage Temperature Coefficient
ROL
Transimpedance
-10
Measured from TMIN to TMAX
1
10
mV
5
µV/°C
300
500
kΩ
Input Characteristics
CMIR
Common Mode Input Range
±3
±3.3
V
CMRR
Common Mode Rejection Ratio
42
50
dB
-ICMR
- Input Current Common Mode Rejection
-6
6
µA/V
+IIN
+ Input Current
-60
1
60
µA
-IIN
- Input Current
-30
1
30
µA
RIN
Input Resistance
45
kΩ
CIN
Input Capacitance
0.5
pF
V
Output Characteristics
VO
IOUT
Output Voltage Swing
RL = 150Ω to GND
±3.4
±3.7
RL = 1kΩ to GND
±3.8
±4.0
V
Output Current
RL = 10Ω to GND
95
120
mA
Supply
IsON
Supply Current
No Load, VIN = 0V
3
4
PSRR
Power Supply Rejection Ratio
DC, VS = ±4.75V to ±5.25V
55
75
-IPSR
- Input Current Power Supply Rejection
DC, VS = ±4.75V to ±5.25V
-2
1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz
2
5
mA
2
µA/V
dB
Typical Performance Curves
Non-Inverting Frequency Response (Phase)
SOT23 Package
Non-Inverting Frequency Response (Gain)
SOT23 Package
90
6
AV=1
0
2
AV=2
AV=2
-2
Phase (°)
Normalized Magnitude (dB)
AV=1
AV=5
-6
-90
AV=5
-180
AV=10
AV=10
-270
-10
RF=750Ω
RL=150Ω
-14
1M
RF=750Ω
RL=150Ω
10M
100M
-360
1M
1G
10M
Inverting Frequency Response (Gain)
SOT23 Package
90
AV=-1
2
AV=-1
AV=-2
0
-2
Phase (°)
Normalized Magnitude (dB)
1G
Inverting Frequency Response (Phase)
6
AV=-3
-90
AV=-2
AV=-3
-180
-6
-10
-270
RF=500Ω
RL=150Ω
-14
1M
RF=500Ω
RL=150Ω
10M
100M
-360
1M
1G
10M
Frequency Response for Various CIN6
6
Normalized Magnitude (dB)
2pF added
1pF added
2
-2
-10
1M
1G
Frequency Response for Various RL
10
-6
100M
Frequency (Hz)
Frequency (Hz)
Normalized Magnitude (dB)
100M
Frequency (Hz)
Frequency (Hz)
0pF added
AV=2
RF=500Ω
RL=150Ω
100M
-6
-14
1M
1G
RL=150Ω
RL=500Ω
-2
-10
10M
RL=100Ω
2
AV=2
RF=500Ω
10M
100M
Frequency (Hz)
Frequency (Hz)
3
1G
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Frequency Response for Various CL
Frequency Response for Various RF
6
AV=2
RL=150Ω
RF=RG=500Ω
10
33pF
340Ω
Normalized Magnitude (dB)
Normalized Magnitude (dB)
14
22pF
6
15pF
2
8pF
-2
10M
620Ω
-2
750Ω
-6
1.2kΩ
AV=2
RG=RF
RL=150Ω
-10
100M
-14
1M
1G
10M
Frequency (Hz)
100M
1G
Frequency (Hz)
Frequency Response for Various Common-mode
Input Voltages
Group Delay vs Frequency
3.5
6
VCM=3V
3
Normalized Magnitude (dB)
AV=2
RF=500Ω
2.5
Delay (ns)
475Ω
2
0pF
-6
1M
2
1.5
AV=1
RF=750Ω
1
-2
VCM=-3V
-6
AV=2
RF=500Ω
RL=150Ω
-10
0
1M
10M
100M
-14
1M
1G
VCM=0V
2
0.5
10M
100M
1G
Frequency (Hz)
Frequency (Hz)
Transimpedance (ROL) vs Frequency
PSRR and CMRR vs Frequency
20
10M
0
Phase
PSRR+
0
1M
-180
10k
Phase (°)
100k
PSRR/CMRR (dB)
-90
Magnitude (Ω)
EL5193C
EL5193C
-270
Gain
1k
-20
PSRR-40
CMRR
-60
-360
100
1k
10k
100k
1M
10M
Frequency (Hz)
100M
-80
10k
1G
4
100k
1M
10M
Frequency (Hz)
100M
1G
Typical Performance Curves
-3dB Bandwidth vs Supply Voltage for Inverting
Gains
-3dB Bandwidth vs Supply Voltage for Noninverting Gains
250
400
RF=750Ω
RL=150Ω
AV=1
200
300
-3dB Bandwidth (MHz)
-3dB Bandwidth (MHz)
350
250
200
AV=2
150
AV=5
100
AV=-1
150
AV=-2
100
AV=-5
50
50
RF=500Ω
RL=150Ω
AV=10
0
5
0
7
6
8
9
5
10
6
8
9
10
Peaking vs Supply Voltage for Inverting Gains
Peaking vs Supply Voltage for Non-inverting Gains
2.5
4
3.5
RF=750Ω
RL=150Ω
AV=1
RF=500Ω
RL=150Ω
2
Peaking (dB)
3
Peaking (dB)
7
Total Supply Voltage (V)
Total Supply Voltage (V)
2.5
2
1.5
AV=2
1
1.5
AV=-1
1
AV=-2
0.5
0.5
AV=10
0
5
6
7
8
9
0
5
10
6
Non-inverting Frequency Response (Gain)
SO8 Package
8
9
10
Non-inverting Frequency Response (Phase)
SO8 Package
6
90
AV=1
AV=1
2
AV=2
-2
AV=5
-6
AV=2
0
Phase (°)
Normalized Magnitude (dB)
7
Total Supply Voltage (V)
Total Supply Voltage (V)
-90
AV=5
-180
AV=10
AV=10
-10
-270
RF=750Ω
RL=150Ω
-14
1M
RF=750Ω
RL=150Ω
10M
100M
-360
1M
1G
10M
100M
Frequency (Hz)
Frequency (Hz)
5
1G
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Inverting Frequency Response (Gain)
SO8 Package
Inverting Frequency Response (Phase)
SO8 Package
6
90
2
AV=-1
0
AV=-5
-6
-10
-90
AV=-5
-180
-270
RF=500Ω
RL=150Ω
RF=500Ω
RL=150Ω
-14
1M
10M
100M
-360
1M
1G
10M
Frequency (Hz)
100M
1G
Frequency (Hz)
-3dB Bandwidth vs Temperature for Non-inverting
Gains
-3dB Bandwidth vs Temperature for Inverting
Gains
500
250
RF=750Ω
RL=150Ω
AV=1
300
AV=2
200
AV=5
100
AV=-2
150
100
AV=-5
50
RF=500Ω
RL=150Ω
AV=10
0
-40
AV=-1
200
-3dB Bandwidth (MHz)
400
-3dB Bandwidth (MHz)
AV=-2
AV=-2
-2
Phase (°)
Normalized Magnitude (dB)
AV=-1
10
60
110
0
-40
160
10
Ambient Temperature (°C)
60
110
160
Ambient Temperature (°C)
Peaking vs Temperature
Voltage and Current Noise vs Frequency
1000
2.5
RL=150Ω
2
Voltage Noise (nV/√Hz)
, Current Noise (pA/√Hz)
AV=1
1.5
Peaking (dB)
EL5193C
EL5193C
1
0.5
AV=-1
100
in+
in-
10
en
0
-0.5
-40
10
60
110
1
100
160
Ambient Temperature (°C)
6
1000
10k
100k
Frequency ()
1M
10M
Typical Performance Curves
Supply Current vs Supply Voltage
100
10
10
8
Supply Current (mA)
Output Impedance (Ω)
Closed Loop Output Impedance vs Frequency
1
0.1
0.01
6
4
2
0.001
100
0
1k
10k
100k
1M
10M
100M
1G
0
2
4
Frequency (Hz)
2nd and 3rd Harmonic Distortion vs Frequency
12
25
AV=+2
VOUT=2VP-P
RL=100Ω
-40
2nd Order
Distortion
-50
AV=+2
RL=150Ω
20
Input Power Intercept (dBm)
-30
Harmonic Distortion (dBc)
10
Two-tone 3rd Order
Input Referred Intermodulation Intercept (IIP3)
-20
-60
3rd Order
Distortion
-70
-80
15
10
5
0
AV=+2
RL=100Ω
-5
-90
1
10
Frequency (MHz)
-10
10
100
100
Frequency (MHz)
Differential Gain/Phase vs DC Input
Voltage at 3.58MHz
Differential Gain/Phase vs DC Input
Voltage at 3.58MHz
0.03
0.04
AV=2
RF=RG=500Ω
RL=150Ω
0.01
dP
AV=1
RF=750Ω
RL=500Ω
0.03
0.02
0
dG (%) or dP (°)
0.02
dG (%) or dP (°)
6
8
Supply Voltage (V)
dG
-0.01
-0.02
0.01
dG
0
-0.01
-0.03
-0.02
-0.04
-0.03
-0.05
dP
-0.04
-1
-0.5
0
0.5
1
-1
DC Input Voltage
-0.5
0
DC Input Voltage
7
0.5
1
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Output Voltage Swing vs Frequency
THD<1%
Output Voltage Swing vs Frequency
THD<0.1%
10
10
RL=500Ω
8
Output Voltage Swing (VPP)
Output Voltage Swing (VPP)
8
RL=150Ω
6
4
2
RL=500Ω
6
RL=150Ω
4
2
AV=2
AV=2
0
0
1
10
Frequency (MHz)
1
100
Small Signal Step Response
10
Frequency (MHz)
100
Large Signal Step Response
VS=±5V
RL=150Ω
AV=2
RF=RG=500Ω
VS=±5V
RL=150Ω
AV=2
RF=RG=500Ω
200mV/div
1V/div
10ns/div
10ns/div
Settling Time vs Settling Accuracy
Transimpedance (RoI) vs Temperature
25
625
AV=2
RF=RG=500Ω
RL=150Ω
VSTEP=5VP-P output
20
600
15
RoI (kΩ)
Settling Time (ns)
EL5193C
EL5193C
10
550
5
0
0.01
575
0.1
525
-40
1
Settling Accuracy (%)
10
60
Die Temperature (°C)
8
110
160
Typical Performance Curves
PSRR and CMRR vs Temperature
ICMR and IPSR vs Temperature
90
2
80
PSRR
1.5
ICMR/IPSR (µ A/V)
PSRR/CMRR (dB)
70
60
CMRR
50
40
30
ICMR+
1
IPSR
0.5
ICMR-
0
20
10
-40
10
60
110
-0.5
-40
160
10
Die Temperature (°C)
60
110
160
Die Temperature (°C)
Offset Voltage vs Temperature
Input Current vs Temperature
2
60
40
Input Current (µ A)
VOS (mV)
1
0
20
IB0
-20
IB+
-1
-40
-2
-40
10
60
110
-60
-40
160
10
Die Temperature (°C)
Positive Input Resistance vs Temperature
160
110
160
5
50
Supply Current (mA)
4
40
RIN+ (kΩ)
110
Supply Current vs Temperature
60
30
20
3
2
1
10
0
-40
60
Temperature (°C)
10
60
110
0
-40
160
Temperature (°C)
10
60
Temperature (°C)
9
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Single 300MHz Current Feedback Amplifier
Typical Performance Curves
Negative Output Swing vs Temperature for Various
Loads
Positive Output Swing vs Temperature for Various
Loads
4.2
-3.5
150Ω
-3.6
4.1
4
-3.7
3.9
-3.8
VOUT (V)
VOUT (V)
1kΩ
3.8
3.7
-3.9
-4
150Ω
1kΩ
-4.1
3.6
3.5
-40
10
60
110
-4.2
-40
160
10
110
60
160
Temperature (°C)
Temperature (°C)
Output Current vs Temperature
Slew Rate vs Temperature
130
4000
Sink
Slew Rate (V/µ S)
IOUT (mA)
125
Source
120
3500
3000
AV=2
RF=RG=500Ω
RL=150Ω
115
-40
10
60
110
2500
-40
160
10
60
Die Temperature (°C)
110
160
Die Temperature (°C)
Maximum Power Dissipation vs Ambient
Temperature
Package Power Dissipation vs Ambient Temp.
JEDEC JESD51-3 Low Effective Thermal Conductivity Test Board
1.4
0.7
625mW
TJMAX=150°C
1.2
0.8
SOT23
0.6
0.4
0.2
0
-50
0.5
391mW
0.4
/W
Power Dissipation (W)
SO8
C
0°
16
1
0.6
8
SO
Power Dissipation (W)
EL5193C
EL5193C
SO
T2
35
256
L
°C
/W
0.3
0.2
0.1
0
0
50
100
0
Ambient Temperature (°C)
25
50
75
100
Ambient Temperature (°C)
10
125
150
Pin Descriptions
EL5193C
8-Pin SO
EL5193C
5-Pin SOT23
1,5
2
4
Pin Name
Function
NC
Not connected
IN-
Inverting input
Equivalent Circuit
VS+
IN+
IN-
VSCircuit1
3
3
IN+
Non-inverting input
4
2
VS -
Negative supply
6
1
OUT
Output
(See circuit 1)
VS+
OUT
VSCircuit 2
7
8
5
VS +
Positive supply
NC
Not connected (leave this pin disconnected)
11
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Applications Information
Product Description
particularly for the SO package, should be avoided if
possible. Sockets add parasitic inductance and capacitance which will result in additional peaking and
overshoot.
The EL5193C is a current-feedback operational amplifier that offers a wide -3dB bandwidth of 300MHz and a
low supply current of 4mA per amplifier. The EL5193C
works with supply voltages ranging from a single 5V to
10V and they are also capable of swinging to within 1V
of either supply on the output. Because of their currentfeedback topology, the EL5193C does not have the normal gain-bandwidth product associated with voltagefeedback operational amplifiers. Instead, its -3dB bandwidth to remain relatively constant as closed-loop gain is
increased. This combination of high bandwidth and low
power, together with aggressive pricing make the
EL5193C the ideal choice for many low-power/highbandwidth applications such as portable, handheld, or
battery-powered equipment.
Capacitance at the Inverting Input
Any manufacturer’s high-speed voltage- or currentfeedback amplifier can be affected by stray capacitance
at the inverting input. For inverting gains, this parasitic
capacitance has little effect because the inverting input is
a virtual ground, but for non-inverting gains, this capacitance (in conjunction with the feedback and gain
resistors) creates a pole in the feedback path of the
amplifier. This pole, if low enough in frequency, has the
same destabilizing effect as a zero in the forward openloop response. The use of large-value feedback and gain
resistors exacerbates the problem by further lowering
the pole frequency (increasing the possibility of
oscillation.)
For varying bandwidth needs, consider the EL5191C
with 1GHz on a 9mA supply current or the EL5192C
with 600MHz on a 6mA supply current. Versions
include single, dual, and triple amp packages with 5-pin
SOT23, 16-pin QSOP, and 8-pin or 16-pin SO outlines.
The EL5193C has been optimized with a 475Ω feedback
resistor. With the high bandwidth of these amplifiers,
these resistor values might cause stability problems
when combined with parasitic capacitance, thus ground
plane is not recommended around the inverting input pin
of the amplifier.
Power Supply Bypassing and Printed Circuit
Board Layout
As with any high frequency device, good printed circuit
board layout is necessary for optimum performance.
Low impedance ground plane construction is essential.
Surface mount components are recommended, but if
leaded components are used, lead lengths should be as
short as possible. The power supply pins must be well
bypassed to reduce the risk of oscillation. The combination of a 4.7µF tantalum capacitor in parallel with a
0.01µF capacitor has been shown to work well when
placed at each supply pin.
Feedback Resistor Values
The EL5193C has been designed and specified at a gain
of +2 with RF approximately 500Ω. This value of feedback resistor gives 200MHz of -3dB bandwidth at AV=2
with 2dB of peaking. With AV=-2, an RF of approximately 500Ω gives 175MHz of bandwidth with 0.2dB of
peaking. Since the EL5193C is a current-feedback
amplifier, it is also possible to change the value of RF to
get more bandwidth. As seen in the curve of Frequency
Response for Various RF and RG, bandwidth and peaking can be easily modified by varying the value of the
feedback resistor.
For good AC performance, parasitic capacitance should
be kept to a minimum, especially at the inverting input.
(See the Capacitance at the Inverting Input section) Even
when ground plane construction is used, it should be
removed from the area near the inverting input to minimize any stray capacitance at that node. Carbon or
Metal-Film resistors are acceptable with the Metal-Film
resistors giving slightly less peaking and bandwidth
because of additional series inductance. Use of sockets,
Because the EL5193C is a current-feedback amplifier,
its gain-bandwidth product is not a constant for different
closed-loop gains. This feature actually allows the
EL5193C to maintain about the same -3dB bandwidth.
As gain is increased, bandwidth decreases slightly while
12
stability increases. Since the loop stability is improving
with higher closed-loop gains, it becomes possible to
reduce the value of RF below the specified 475Ω and
still retain stability, resulting in only a slight loss of
bandwidth with increased closed-loop gain.
Video performance has also been measured with a 500Ω
load at a gain of +1. Under these conditions, the
EL5193C has dG and dP specifications of 0.03% and
0.04°.
Output Drive Capability
Supply Voltage Range and Single-Supply
Operation
In spite of its low 4mA of supply current, the EL5193C
is capable of providing a minimum of ±95mA of output
current. With a minimum of ±95mA of output drive, the
EL5193C is capable of driving 50Ω loads to both rails,
making it an excellent choice for driving isolation transformers in telecommunications applications.
The EL5193C has been designed to operate with supply
voltages having a span of greater than 5V and less than
10V. In practical terms, this means that the EL5193C
will operate on dual supplies ranging from ±2.5V to
±5V. With single-supply, the EL5193C will operate
from 5V to 10V.
Driving Cables and Capacitive Loads
When used as a cable driver, double termination is
always recommended for reflection-free performance.
For those applications, the back-termination series resistor will decouple the EL5193C from the cable and allow
extensive capacitive drive. However, other applications
may have high capacitive loads without a back-termination resistor. In these applications, a small series resistor
(usually between 5Ω and 50Ω) can be placed in series
with the output to eliminate most peaking. The gain
resistor (RG) can then be chosen to make up for any gain
loss which may be created by this additional resistor at
the output. In many cases it is also possible to simply
increase the value of the feedback resistor (RF) to reduce
the peaking.
As supply voltages continue to decrease, it becomes necessary to provide input and output voltage ranges that
can get as close as possible to the supply voltages. The
EL5193C has an input range which extends to within 2V
of either supply. So, for example, on +5V supplies, the
EL5193C has an input range which spans ±3V. The output range of the EL5193C is also quite large, extending
to within 1V of the supply rail. On a ±5V supply, the
output is therefore capable of swinging from -----4V to
+4V. Single-supply output range is larger because of the
increased negative swing due to the external pull-down
resistor to ground.
Video Performance
For good video performance, an amplifier is required to
maintain the same output impedance and the same frequency response as DC levels are changed at the output.
This is especially difficult when driving a standard video
load of 150Ω, because of the change in output current
with DC level. Previously, good differential gain could
only be achieved by running high idle currents through
the output transistors (to reduce variations in output
impedance.) These currents were typically comparable
to the entire 4mA supply current of each EL5193C
amplifier. Special circuitry has been incorporated in the
EL5193C to reduce the variation of output impedance
with current output. This results in dG and dP specifications of 0.03% and 0.04°, while driving 150Ω at a gain
of 2.
Current Limiting
The EL5193C has no internal current-limiting circuitry.
If the output is shorted, it is possible to exceed the Absolute Maximum Rating for output current or power
dissipation, potentially resulting in the destruction of the
device.
Power Dissipation
With the high output drive capability of the EL5193C, it
is possible to exceed the 125°C Absolute Maximum
junction temperature under certain very high load current conditions. Generally speaking when RL falls below
about 25Ω, it is important to calculate the maximum
junction temperature (TJMAX ) for the application to
determine if power supply voltages, load conditions, or
package type need to be modified for the EL5193C to
13
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
remain in the safe operating area. These parameters are
calculated as follows:
T JMA X = T MA X + ( θ JA × n × PD MA X )
where:
70$; 0D[LPXP$PELHQW7HPSHUDWXUH
θ-$ 7KHUPDO5HVLVWDQFHRIWKH3DFNDJH
Q 1XPEHURI$PSOLILHUVLQWKH3DFNDJH
3'0$; 0D[LPXP3RZHU'LVVLSDWLRQRI(DFK
$PSOLILHULQWKH3DFNDJH
PDMAX for each amplifier can be calculated as follows:
V OU T MAX
PD MA X = ( 2 × V S × I SMA X ) + ( V S – V OU T MAX ) × ---------------------------RL
where:
96 6XSSO\9ROWDJH
,60$; 0D[LPXP6XSSO\&XUUHQWRI$
92870$; 0D[LPXP2XWSXW9ROWDJH 5HTXLUHG
5/ /RDG5HVLVWDQFH
14
Typical Application Circuits
Inverting 200mA Output Current Distribution Amplifier
0.1µ F
+5V
IN+
VS+
OUT
INVS0.1µ F
-5V
500Ω
5Ω
0.1µ F
VOUT
+5V
IN+
VS+
5Ω
OUT
INVS0.1µ F
-5V
500Ω
500Ω
VIN
Fast-Settling Precision Amplifier
500Ω
500Ω
0.1µ F
+5V
IN+
VS+
OUT
INVS0.1µ F
500Ω
-5V
500Ω
+5V
0.1µ F
VIN
IN+
VS+
OUT
INVS0.1µ F
-5V
15
VOUT
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
Typical Application Circuits
Differential Line Driver/Receiver
0.1µ F
0.1µ F
+5V
IN+
+5V
IN+
VS+
VS+
OUT
OUT
IN-
INVS-
VS0.1µ F
0.1µ F
-5V
-5V
500Ω
0.1µ F
250Ω
500Ω
500Ω
VOUT+
1kΩ
0.1µ F
240Ω
+5V
IN+
0.1µ F
+5V
VS+
OUT
IN-
0.1µ F
250Ω
IN+
VOUT-
VS+
OUT
1kΩ
VS-
IN-
0.1µ F
VS0.1µ F
-5V
500Ω
-5V
500Ω
VIN
500Ω
Transmitter
500Ω
Receiver
16
VOUT
EL5193C
EL5193C
Single 300MHz Current Feedback Amplifier
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the circuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.
WARNING - Life Support Policy
Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to support or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
expected to result in significant personal injury or death. Users contemplating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elantec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
April 12, 2001
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
Fax:
(408) 945-9305
European Office: +44-118-977-6020
Japan Technical Center: +81-45-682-5820
17
Printed in U.S.A.
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